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EN 1.4530 Stainless Steel vs. G-CoCr28 Cobalt

EN 1.4530 stainless steel belongs to the iron alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4530 stainless steel and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
83
Tensile Strength: Ultimate (UTS), MPa 1030 to 1370
560

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 790
1200
Melting Completion (Liquidus), °C 1460
1330
Melting Onset (Solidus), °C 1410
1270
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 11
14

Otherwise Unclassified Properties

Base Metal Price, % relative 15
100
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 3.4
6.2
Embodied Energy, MJ/kg 46
84
Embodied Water, L/kg 130
440

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 36 to 48
19
Strength to Weight: Bending, points 29 to 35
19
Thermal Shock Resistance, points 35 to 47
14

Alloy Composition

Aluminum (Al), % 0.6 to 0.8
0
Carbon (C), % 0 to 0.015
0.050 to 0.25
Chromium (Cr), % 11.5 to 12.5
27 to 30
Cobalt (Co), % 0
48 to 52
Iron (Fe), % 74.4 to 77.3
9.7 to 24.5
Manganese (Mn), % 0 to 0.1
0 to 1.5
Molybdenum (Mo), % 1.9 to 2.2
0 to 0.5
Nickel (Ni), % 8.5 to 9.5
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0.5 to 1.5
Sulfur (S), % 0 to 0.0050
0 to 0.030
Titanium (Ti), % 0.28 to 0.37
0